From £2,072
Relax... you have found a reliable extension builder in West Midlands. BORDO Design is a friendly and reliable company based in West Midlands who c...
From £1,904
Experienced extension builder ready to quote for your work. Spectrum Homes is the best extension builder in West Midlands. No obligation free quote...
From £1,896
Need an Extension Builder in West Midlands? BellTrim Wood Products has been helping local clients (20 mile radius) with their extension buildering ...
From £2,136
Kunda Group is a trusted extension builder serving customers in West Midlands and the surrounding area. Contact us to today to get a competitive qu...
From £1,912
Mountainview Construction is an established and experienced local extension builder in West Midlands. Please contact us for a free, no obligation q...
From £1,896
Laurence Cox is an established and experienced local extension builder in West Midlands. Please contact us for a free, no obligation quote and comp...
From £1,840
Renka is an established and experienced local extension builder in West Midlands. Please contact us for a free, no obligation quote and competitive...
From £2,120
Experienced extension builder ready to quote for your work. x10hosts is the best extension builder in West Midlands. No obligation free quotes and ...
From £1,904
Trusted and professional extension builder in West Midlands. Experienced in all extension buildering work and keeping within budget and on quote. P...
From £2,016
Our building services company Chadha Constructions Limited was established in March 2021, but have been providing professional, trustworthy buildin...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in West Midlands it ranges from £1,840 (Renka based in B19) to £2,136 (Kunda Group based in B15).
Comparing extension builders estimates for fitting an RSJ gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get rates and quotes to install an RSJ in West Midlands by posting a job with HaMuch and we will send it to extension builders in West Midlands.
"Removal of 3 walls and 3 RSJ installations to extend a kitchen. Need for a structual engineering consultation and building control approval since at least one wall will be load bearing." - BIRMINGHAM, job posted 05/05/24
"RSJ installation" - BIRMINGHAM, job posted 01/03/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Birmingham | £29 | £227 |
| Install An RSJ near Smethwick | £29 | £226 |
| Install An RSJ near Oldbury | £29 | £227 |
| Install An RSJ near West Bromwich | £29 | £227 |
| Install An RSJ near Halesowen | £29 | £227 |
| Install An RSJ near Rowley Regis | £29 | £226 |
| Install An RSJ near Sandwell | £29 | £229 |
| Install An RSJ near Sutton Coldfield | £29 | £228 |
| Install An RSJ near Solihull | £29 | £231 |
| Install An RSJ near Tipton | £29 | £227 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,270

Two storey extension - £87,654

Build a timber frame extension - £25,770

Build a swimming pool - £80,770

Single storey extension - £50,392

Side return extension - £38,908

Install an RSJ - £1,970

Outbuilding - £9,770

Build a Mansard loft conversion - £51,770

Loft conversion - £31,590

Build a kitchen extension - £41,770

Hip to gable loft conversion - £41,770

Granny annexe - £86,770

Garden office - £9,770

Convert a Garage - £15,770

Garage - £18,270

Build a flat roof extension - £21,770

Build a dormer loft conversion - £41,770

Concrete foundations - £6,020

Convert a bungalow loft - £28,770

Convert a basement - £34,908